This study investigated the effect of team project activity for game making on the elementary mathematically gifted students` community care and organizational management capacity. 7 mathematically gifted students of 4th grade are selected and participated. After 15 hours activities during 2 months of team project on game making, their community care and organizational management capacity were improved. This results suggested that leadership education is possible in mathematics curriculum for mathematics gifted students.

In this study, I used McAnallen Anxiety in Mathematics Teaching Survey Tool to analyze 214 South Korean elementary teachers` anxiety for teaching mathematics. From the analysis of ANOVA and Regression Model, I found that there are statistically significant differences among teachers regarding anxiety for teaching mathematics according to their academic backgrounds, certification levels and teaching experiences. On the other hand, there is no statistically significant difference according to their gender. From the findings of this study, I found that there is a possibility of reducing teachers` anxiety for teaching mathematics with teacher education programs.

This study analyzed changes of representations which had come up in the problem-solving process of math-gifted 6th grade students that ACODESA had been applied. The class was designed on a ACODESA procedure that enhancing the use of varied representations, and conducted for 40minutes, 4 times over the period. The recorded videos and interviews with the students were transcribed for analysing data. According to the result of the analysis, which adopted Despina`s using type of representation, there appeared types of `adding`, `elaborating`, and `reducing`. This study found that there is need for a class design that can make personal representations into that of public through small group discussions and confirmation in the problem-solving process.

Computer technology and internet environment have been adapted to teaching and learning in Korean educational context. However, there are several problematic areas in operating web site for teaching and learning mathematics. This study aims to investigate the operating system, such as designing web site, contents information, and contents connection of NRICH web site that has been operated as a part of `Millennium Mathematics Project` of Cambridge University since 1997. Based on these categories, this study also gives the implications for how to develop theme-centered contents, accumulation of continuous and long-term data, induction of user`s participation, and various cooperation project.

This study analyzed what STEAM elements, except mathematical content, are contained in 2009 revised elementary school 3rd and 4th grade group mathematics textbooks. STEAM elements in the textbooks were examined by grade and by content area in the elementary school mathematics curriculum. According to the results, the difference between 3rd and 4th grade in the number of STEAM elements is almost not visible. Distribution of specific content areas could be seen that the distribution STEAM element is similar to the percentage distribution of the content area. However, the number of STEAM elements are different depending on the type of STEAM. The number of arts element is 448(67.6%) and this elements are seen the most. The number of representative art and cultural art is 344(51.9%) and 104(15.7%), respectively. The number of technology-engineering and science is 160(24.1%) and 55(8.3%), respectively. We need to developed to promote use of science element in next mathematics curriculum.